Minerals are elements that originate in the Earth and cannot be made by living organisms. They are natural compounds formed through geological processes and are what remains as ash when plant or animal tissue is burned or decompose completely after death. Minerals are inorganic substances which means they are not formed by living matter and contain no carbon‚ and can be simply defined as chemical molecules which cannot be reduced to simpler substances. To be classified as a "true" mineral‚ a substance
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MATALLIC MENIRALS ROLL NO: 07 Metallic Minerals On an auspicious day‚ sometime around a million years ago‚ a member of the Homo habilis species stood erect and walked steadily on his two feet and his two hands became totally free. A new species – Homo erectus—began its journey on a new evolutionary track. This great change took around four million years after his ancestors – the hominids — broke free from the lineage of apes and chimpanzees. But ‚ perhaps for the next seven to eight hundred
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Phuong Nguyen Cheryl Thompson BBB4M0 June‚ 10‚ 2012 Diamonds There are many different kinds of valuable gem in the world; however‚ diamonds is the most precious and favorite stone all the time. As the hardest known naturally material‚ diamond can be used to polish‚ cut and become a jewelery. Consumer claim that diamond is forever‚ that’s why diamond wedding ring represent for the endless love. This is a reason why diamond always become a “hot topic” in the market all over the world.
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These rocks don’t lose their shape Diamonds are a girl’s best friend Ladies and gentlemen‚do u know what this song all about?......No‚it is not gold…..Yes! It is diamond! Perhaps some audience know this song.This song is singing by a Hollywood star‚Marilyn Monroe‚struck a chord which resonated across the world when she sang Diamonds are a Girl’s best friend in the classic 1950s film Gentlemen Prefer Blondes. Ladies and gentlemen‚when I said the word “DIAMONDS”‚I’m sure the picture of dazzling whitestones
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DIAMOND MINING AND ITS IMPACT ON ENVIROMENT * Diamond is the strongest natural mineral known by a man. It is a crystalline form of carbon. * Composed primarily individual crystals of a cubic appearance. * There are three main uses for Diamonds * Industrial * Fashion (only 5% of diamonds) * Investment Approximately 130‚000‚000 carats (26‚000 kg) of diamonds are mined yearly‚ with a total value of nearly US$9 billion‚ and about 100‚000 kg are
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mineralogy‚ diamond (from the ancient Greek αδάμας – adámas "unbreakable") is an allotrope of carbon‚ where the carbon atoms are arranged in a variation of the face-centered cubic crystal structure called a diamond lattice. Diamond is renowned as a material with superlative physical qualities‚ most of which originate from the strong covalent bonding between its atoms. In particular‚ diamond has the highest hardness and thermal conductivity of any bulk material. ELECTRICAL CONDUCTANCE: - . Diamond is less
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discovered in 1852 by a mineralogist by the name of John P. Calcite. Calcite is a carbonate mineral that is usually white or colorless‚ but can have variety of colors due to impurities. It is one of the world’s most important minerals and is the most common. Calcite is one of the softest minerals and can be found in sedimentary and metamorphic rocks. Calcite has more practical uses than most other minerals. This mineral can be found in limestone and marble which is makes up most of the Earth’s crust. The
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“A diamond‚ is the symbol for love‚ commitment‚ and a joyful new beginning‚” said the TV commercial. Many of the world’s diamonds‚ are mined using practices that exploit workers‚ children‚ and communities. A million diamond diggers in Africa earn less than a dollar a day. Miners are dying in accidents‚ child labor is widespread‚ and corrupt leaders are depriving mining communities of funds badly needed for economic development. In extreme cases‚ diamond mining can cause entire ecosystems to
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Southport Minerals‚ Inc – some points to remember • Financial architecture (financing program) can transform a negative NPV project into a positive NPV project value addition done by financial manager. • Southport Indonesia (SI)‚ a wholly-owned subsidiary of Southport Minerals‚ entrusted with a responsibility of mining the copper ore at Firstburg‚ Indonesia. o Initial experiments established that Firstburg mine contained 33 million tons of copper ore with an average copper content of 2.5%
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Diamond Impact Mining has had both a negative and a positive effect on many societies; it has created conflict‚ higher quality of living‚ a higher economy and a higher environmental risk. In this essay I will focus mainly on the impact of diamonds in Africa‚ as this country is one of the main supplier of diamonds worldwide. Two-thirds of the world’s diamonds are exported from Africa; they are mined in these countries; Angola‚ Botswana‚ Tanzania‚ The Congo and Zimbabwe. For many of these countries
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